DTU wireless data terminals Industrial Router Shenzhen peacekeeping more factory outlets

WD8922 GPRS / CDMA DTU GPRS based data communication network terminal products. Using industrial-grade terminal block interface, convenient application in electric power, environmental monitoring, automotive, water, finance, street surveillance, heat pipe network, coal, oil and other industries. Products designed to meet industry standard, embedded PPP, TCP / IP, DDP and other protocols, enabling the user device to the data center remotely transparent data communications. Customzzed of development needs. Selection of industrial grade devices to meet the needs of harsh environments GPRS DTU Technical parameters Features Functions Built Huawei, ZTE and Siemens Wireless Modules Embedded TCP / IP protocol stack to support multiple TCP / IP protocol, TCP, UDP, DNS, PPP, DHCP and other similar products in the smallest, suitable for embedded and integrated with energy-saving mode, suitable for mobile devices. Can point to point, multipoint and APN green and so flexible networking, support CLIENT and SERVER modes based on PING mode heartbeat function, low-power flow to maintain the link: When a sleep state current of 3mA highly integrated GPRS and TCP / IP technology, the Internet and the GPRS network organically combined. Completely transparent transmission mode, can completely replace the digital radio, the existing system without any changes, the system updates to minimize investment. Support ALWAYS ONLINE (always online) mode, support dropped to reconnect. Scalable Update Firmware, for better transmission quality. Online support GPRS data transfer, support remote wake-up call; remote reset and upgrades. Timing short connectivity link transparent mode automatically release and activate reconnect. Real-time dynamic refresh, effective solution to the wireless network "false connection" phenomenon. RF characteristic features GSM: dual-band: EGSM900 and GSM1800 CDMA: CDMA2000 1X Rev0, 800M (TX 824M ~ 849M RX 869M ~ 894M) module reset: using AT commands or brownout reset voice decoding standards (three rates): half speed (ETS 06.20) at full speed (ETS 06.10) Enhanced Full (ETS06.50 / 6.60 / 06.80) electric power conditions and input voltage: 3.3V ~ 24.8V SIM card operating voltage: 3V / 1.8V Working current consumption: talk mode: 250mA (typical value) in idle mode :: 4.0mA (max) Input Current: 100MA (Max) Operating temperature: -20 ℃ ~ 60 ℃ (automatic shutdown of more than 70 ℃) Storage temperature: -30 ℃ ~ 85 ℃. Humidity: ≤90% magnetic compatibility: Electrostatic Discharge Immunity Test Level 3 RF electromagnetic radiation immunity test level 3 Interface Volume Interface: standard RS-232/485 / TTL DB9 Interface Antenna: 50ohm / SMA / Female volume : 75 * 50 * 16mm Weight: 200g shell package: good electromagnetic shield and metal housing, durable, anti-electromagnetic interference, high temperature heat capacity http://www.szweiyue.com/?c=msg&id=215